Display substrate, display panel and display device

ABSTRACT

A display substrate and a display device are provided. The display substrate includes: a color filter layer including a display sub-pixel and a dummy sub-pixel and a spacer including a plurality of first spacers located in the periphery region and a plurality of second spacers located in the display region, the display sub-pixel is located in a display region and includes a first display sub-pixel, a second display sub-pixel, a third display sub-pixel, and a fourth display sub-pixel; the dummy sub-pixel is located in a periphery region the dummy sub-pixel is located in the dummy region of the periphery region, the dummy sub-pixel includes a first dummy sub-pixel, a second dummy sub-pixel, a third dummy sub-pixel, and a fourth dummy sub-pixel; an orthographic projection of the first spacer on the first base substrate has no overlap with an orthographic projection of the dummy sub-pixel on the first base substrate.

TECHNICAL FIELD

At least one embodiment of the present disclosure relates to a displaysubstrate, a display panel, and a display device.

BACKGROUND

Generally, a liquid crystal display device includes an array substrateand an opposed substrate, the array substrate and the opposed substrateare opposite to each other and are assembled to form a cell, a liquidcrystal layer is disposed inside the cell, and the cell is provided witha spacer therein to support a cell gap. In order to facilitate anorientation of liquid crystal molecules, one side of the array substrateclose to the liquid crystal layer and one side of the opposed substrateclose to the liquid crystal layer are provided with an alignment layer,respectively. A color filter layer may be disposed on the arraysubstrate or on the opposed substrate, and the substrate provided withthe color filter layer may be referred to as a color filter substrate.

The liquid crystal display device includes a display region and aperiphery region at least located at one side of the display region. Theperiphery region may be provided with a dummy sub-pixel to form a dummyregion so as to facilitate improving a display quality.

SUMMARY

At least one embodiment of the present disclosure provides a displaysubstrate, a display panel, and a display device.

At least one embodiment of the present disclosure provides a displaysubstrate, including a color filter layer and a spacer; the color filterlayer includes a display sub-pixel and a dummy sub-pixel, the displaysub-pixel is located in a display region of a first base substrate, thedisplay sub-pixel includes a first display sub-pixel, a second displaysub-pixel, a third display sub-pixel, and a fourth display sub-pixel,colors of emitted light of the first display sub-pixel, the seconddisplay sub-pixel, the third display sub-pixel, and the fourth displaysub-pixel are different from each other; the dummy sub-pixel is locatedin a periphery region of the first base substrate, the periphery regionis at least located at one side of the display region, the peripheryregion includes a dummy region close to the display region and an edgeregion away from the display region, the dummy sub-pixel is located inthe dummy region, the dummy sub-pixel includes a first dummy sub-pixel,a second dummy sub-pixel, a third dummy sub-pixel, and a fourth dummysub-pixel, materials of the first dummy sub-pixel, the second dummysub-pixel, the third dummy sub-pixel, and the fourth dummy sub-pixel arethe same as materials of the first display sub-pixel, the second displaysub-pixel, the third display sub-pixel, and the fourth displaysub-pixel, respectively; the spacer includes a plurality of firstspacers and a plurality of second spacers, the plurality of firstspacers are located in the periphery region, the plurality of secondspacers are located in the display region; an orthographic projection ofeach of the plurality of first spacers on the first base substrate hasno overlap with an orthographic projection of the dummy sub-pixel on thefirst base substrate.

In one or more embodiment of the present disclosure, the dummy regionincludes a blank sub-pixel, the color filter layer is hollowed-out at aposition of the blank sub-pixel, the dummy region includes a first dummysub-region and a second dummy sub-region located at two opposite sidesof the display region, respectively, the blank sub-pixel includes afirst blank sub-pixel located in the first dummy sub-region and a secondblank sub-pixel located in the second dummy sub-region, the first blanksub-pixel and the second blank sub-pixel are located in different rows.

In one or more embodiment of the present disclosure, one of the firstblank sub-pixel and the second blank sub-pixel is located in aneven-numbered row, and the other one of the first blank sub-pixel andthe second blank sub-pixel is located in an odd-numbered row.

In one or more embodiment of the present disclosure, the plurality offirst spacers are only located in the edge region; or, the plurality offirst spacers are located in the dummy region and in the edge region, anorthographic projection of the first spacer located in the dummy regionon the first base substrate has an overlap with an orthographicprojection of the blank sub-pixel on the first base substrate.

In one or more embodiment of the present disclosure, the displaysubstrate further includes a black matrix and a light-shielding layer,the black matrix and the light-shielding layer are located on the firstbase substrate, the black matrix is located in the display region, thelight-shielding layer is located in the periphery region, anorthographic projection of the first spacer on the first base substrateis located within an orthographic projection of the light-shieldinglayer on the first base substrate, and an orthographic projection of thesecond spacer on the first base substrate is located within anorthographic projection of the black matrix on the first base substrate.

In one or more embodiment of the present disclosure, each of the firstdummy sub-region and the second dummy sub-region includes two columns ofdummy sub-pixels; in the first dummy sub-region, one of an odd-numberedrow and an even-numbered row includes one first dummy sub-pixel and onesecond dummy sub-pixel, and the other one of the odd-numbered row andthe even-numbered row includes two blank sub-pixels; in the second dummysub-region, one of an odd-numbered row and an even-numbered row includesone third dummy sub-pixel and one fourth dummy sub-pixel, and the otherone of the odd-numbered row and the even-numbered row includes two blanksub-pixels.

In one or more embodiment of the present disclosure, the first displaysub-pixel, the second display sub-pixel, the third display sub-pixel,and the fourth display sub-pixel are arranged sequentially in a firstdirection and constitute one pixel, two pixels adjacent in a seconddirection are staggered in the first direction by a distance of twodisplay sub-pixels, the first direction is intersected with the seconddirection.

In one or more embodiment of the present disclosure, the edge regionincludes a blank region sub-pixel, the color filter layer ishollowed-out at a position of the blank region sub-pixel; the secondspacer located in the display region and the first spacer located in theedge region at one side of the display region are spaced apart by threedisplay sub-pixels.

In one or more embodiment of the present disclosure, each of the firstdummy sub-region and the second dummy sub-region includes three columnsof dummy sub-pixels; in the first dummy sub-region, one of anodd-numbered row and an even-numbered row includes one first dummysub-pixel, one second dummy sub-pixel, and one third dummy sub-pixel,and the other one of the odd-numbered row and the even-numbered rowincludes one fourth dummy sub-pixel and two blank sub-pixels; in thesecond dummy sub-region, one of an odd-numbered row and an even-numberedrow includes one third dummy sub-pixel and two fourth dummy sub-pixels,and the other one of the odd-numbered row and the even-numbered rowincludes one fourth dummy sub-pixel and two blank sub-pixels.

In one or more embodiment of the present disclosure, each of the firstdummy sub-region and the second dummy sub-region includes five columnsof dummy sub-pixels; in the first dummy sub-region, one of anodd-numbered row and an even-numbered row includes two first dummysub-pixels, one second dummy sub-pixel, one third dummy sub-pixel, andone fourth dummy sub-pixel, and the other one of the odd-numbered rowand the even-numbered row includes one first dummy sub-pixel, one seconddummy sub-pixel, one third dummy sub-pixel, and two blank sub-pixels; inthe second dummy sub-region, one of an odd-numbered row and aneven-numbered row includes one first dummy sub-pixel, one second dummysub-pixel, one third dummy sub-pixel, and two fourth dummy sub-pixels,and the other one of the odd-numbered row and the even-numbered rowincludes one first dummy sub-pixel, one second dummy sub-pixel, onethird dummy sub-pixel and two blank sub-pixels.

In one or more embodiment of the present disclosure, each of the firstdummy sub-region and the second dummy sub-region includes six columns ofdummy sub-pixels; in the first dummy sub-region, one of an odd-numberedrow and an even-numbered row includes one first dummy sub-pixel, onesecond dummy sub-pixel, one third dummy sub-pixel, and three fourthdummy sub-pixels, and the other one of the odd-numbered row and theeven-numbered row includes one first dummy sub-pixel, one second dummysub-pixel, two fourth dummy sub-pixels, and two blank sub-pixels; in thesecond dummy sub-region, one of an odd-numbered row and an even-numberedrow includes one first dummy sub-pixel, one second dummy sub-pixel, onethird dummy sub-pixel, and three fourth dummy sub-pixels, and the otherone of the odd-numbered row and the even-numbered row includes one thirddummy sub-pixel, three fourth dummy sub-pixels, and two blanksub-pixels.

In one or more embodiment of the present disclosure, the first spacerand the second spacer have a same size in a direction perpendicular tothe first base substrate, a distance from a surface of the first spaceraway from the first base substrate to the first base substrate issmaller than a distance from a surface of the second spacer away fromthe first base substrate to the first base substrate.

In one or more embodiment of the present disclosure, the displaysubstrate further includes an optical clear adhesive layer located onthe first base substrate, the optical clear adhesive layer covers thedisplay sub-pixel and the dummy sub-pixel.

In one or more embodiment of the present disclosure, the displaysubstrate further includes a first alignment layer located on the firstbase substrate, the first alignment layer covers the display sub-pixeland the dummy sub-pixel.

In one or more embodiment of the present disclosure, the first displaysub-pixel includes a red sub-pixel, the second display sub-pixelincludes a green sub-pixel, the third display sub-pixel includes a bluesub-pixel, and the fourth display sub-pixel includes a white sub-pixel.

At least one embodiment of the present disclosure further provides adisplay panel, including the display substrate described in any of theabove.

In one or more embodiment of the present disclosure, the display panelfurther includes an array substrate, the array substrate includes aplurality of pixel electrodes, and the orthographic projection of thedummy sub-pixel on the first base substrate has no overlap withorthographic projections of the plurality of pixel electrodes on thefirst base substrate.

In one or more embodiment of the present disclosure, an orthographicprojection of the display sub-pixel on the first base substrate has anoverlap with an orthographic projection of one pixel electrode of theplurality of pixel electrodes on the first base substrate.

In one or more embodiment of the present disclosure, a gap is providedbetween the first spacer and the array substrate.

In one or more embodiment of the present disclosure, the second spaceris in contact with the array substrate.

At least one embodiment of the present disclosure further provides adisplay device, including the display panel described in any of theabove.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the technical solution(s) in theembodiments of the present disclosure, the drawings of the embodimentswill be briefly introduced in the following. Apparently, the describeddrawings in the following are only related to some embodiments of thepresent disclosure without any limitation to the present disclosure.

FIG. 1 is a plan view of a display substrate provided by an embodimentof the present disclosure;

FIG. 2 is a schematic diagram of a mask for forming a sub-pixelillustrated in FIG. 1 , as provided by an embodiment of the presentdisclosure;

FIG. 3 is a schematic diagram of a mask for forming a spacer illustratedin FIG. 1 , as provided by an embodiment of the present disclosure;

FIG. 4 is a plan view of a display substrate of RGBW display mode;

FIG. 5 is a schematic diagram of a mask for forming the displaysubstrate of RGBW display mode illustrated in FIG. 4 ;

FIG. 6 is a plan view of a display substrate provided by an embodimentof the present disclosure;

FIG. 7 is a schematic diagram of a mask for forming a spacer in thedisplay substrate illustrated in FIG. 6 , as provided by an embodimentof the present disclosure;

FIG. 8A is a plan view of a display substrate provided by an embodimentof the present disclosure;

FIG. 8B is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 9 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 8A, as provided by an embodiment of thepresent disclosure;

FIG. 10 is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 11 is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 12 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 11 , as provided by an embodiment of thepresent disclosure;

FIG. 13 is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 14 is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 15 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 14 , as provided by an embodiment of thepresent disclosure;

FIG. 16 is a plan view of a display substrate provided by anotherembodiment of the present disclosure;

FIG. 17 is a partial cross-sectional view (for example, across-sectional view taken along A-B of FIG. 8A) of a display panelprovided by an embodiment of the present disclosure;

FIG. 18 is a partial cross-sectional view (for example, across-sectional view taken along C-D of FIG. 8A) of a display panelprovided by an embodiment of the present disclosure;

FIG. 19 is a partial cross-sectional view of a display panel provided byanother embodiment of the present disclosure;

FIG. 20 is a schematic diagram of a black matrix and a light-shieldinglayer in a display substrate provided by an embodiment of the presentdisclosure; and

FIG. 21 is a schematic diagram of a display substrate provided by anembodiment of the present disclosure.

DETAILED DESCRIPTION

In order to make objectives, technical details and advantages of theembodiments of the present disclosure more clearly, the technicalsolutions of the embodiments will be described in a clearly and fullyunderstandable way in connection with the drawings related to theembodiments of the present disclosure. Apparently, the describedembodiments are just a part but not all of the embodiments of thepresent disclosure. Based on the described embodiments herein, thoseskilled in the art can obtain other embodiment(s), without any inventivework, which should be within the scope of the present disclosure.

Unless otherwise defined, all the technical and scientific terms usedherein have the same meanings as commonly understood by one of ordinaryskill in the art to which the present disclosure belongs. The terms“first,” “second,” etc., which are used in the present disclosure, arenot intended to indicate any sequence, amount or importance, butdistinguish various components. Also, the terms “comprise,”“comprising,” “include,” “including,” etc., are intended to specify thatthe elements or the objects stated before these terms encompass theelements or the objects and equivalents thereof listed after theseterms, but do not preclude the other elements or objects. The phrases“connect”, “connected”, etc., are not intended to define a physicalconnection or mechanical connection, but may include an electricalconnection, directly or indirectly. “On,” “under,” “right,” “left” andthe like are only used to indicate relative position relationship, andwhen the position of the described object is changed, the relativeposition relationship may be changed accordingly.

In order to prevent from the problem such as light leakage, usually, ashielding layer is provided in the periphery region of the displaydevice. The shielding layer and black matrixes disposed in the displayregion may be formed from the same film layer by the same process. Thelight-shielding layer usually covers the entire periphery region, whileblack matrixes in the display region are arranged in a form of matrix.For example, the black matrixes in the display region only are providedat positions of data lines and gate lines. In this way, a film layer inthe dummy region, for example, a resin layer for forming a dummy colorfilter has a relatively larger thickness, which is liable to make anexcessively greater cell gap and hence leads to the problem of sideMura. The problem of side Mura includes side yellowing, which affectsthe display quality.

The liquid crystal display device includes a plurality of pixels, andeach of the plurality of pixels includes a plurality of sub-pixels. Forexample, one pixel includes a plurality of sub-pixels of differentcolors. For example, one pixel includes a red sub-pixel, a greensub-pixel and a blue sub-pixel, without limited thereto. The number ofsub-pixels included in one pixel and the color of each of the sub-pixelsmay be determined depending on demands. For example, one pixel includesa red sub-pixel, a green sub-pixel, a blue sub-pixel, and a whitesub-pixel. The number of the white sub-pixel included in one pixel maybe determined depending on demands.

In order to lower the cost of development of products, the color filterlayer of the liquid crystal display device usually is manufactured byadopting a method in which sub-pixels of different colors share onemask.

FIG. 1 is a plan view of a display substrate provided by an embodimentof the present disclosure. As illustrated in FIG. 1 , the displaysubstrate 01 includes a display region R1 and a periphery region R2; theperiphery region R2 includes a dummy region R21 close to the displayregion R1 and an edge region R22 away from the display region R1. Adisplay sub-pixel SP is provided in the display region R1, and thedisplay sub-pixel SP includes a first display sub-pixel SP1, a seconddisplay sub-pixel SP2, and a third display sub-pixel SP3. A dummysub-pixel SP is provided in the dummy region R21, and the dummysub-pixel SP includes a first dummy sub-pixel SP01, a second dummysub-pixel SP02, and a third dummy sub-pixel SP03. By providing the dummysub-pixel SP, it can facilitate improving the image quality of thedisplay sub-pixel in the display region R1, and can facilitate atransition from the display region R1 to the dummy region R21 duringcoating an alignment layer, so that the orientation of the liquidcrystal molecules is more ordered, thereby facilitating the improvementof display quality at edge positions of the display region.

The first display sub-pixel SP1, the second display sub-pixel SP2 andthe third display sub-pixel SP3 may be formed by using the same mask.The first display sub-pixel SP1, the second display sub-pixel SP2 andthe third display sub-pixel SP3 are located in the display region R1.Moreover, forming the first dummy sub-pixel SP01 located in the dummyregion R21 at the same time when forming the first display sub-pixelSP1; forming the second dummy sub-pixel SP02 located in the dummy regionR21 at the same time when forming the second display sub-pixel SP2; andforming the third dummy sub-pixel SP03 located in the dummy region R21at the same time when forming the third display sub-pixel SP3. Forexample, the first display sub-pixel SP1 is a red sub-pixel, the seconddisplay sub-pixel SP2 is a green sub-pixel, and the third displaysub-pixel SP3 is a blue sub-pixel.

As illustrated in FIG. 1 , the display substrate further includes aspacer 11. The spacer 11 includes a first spacer 111 located in theperiphery region R2 and a second spacer 112 located in the displayregion R1. The first spacer 111 and the second spacer 112 may be formedby using the same mask. For example, as illustrated in FIG. 1 , thefirst spacer 111 is only disposed in the edge region R22. The firstspacer 111 is not disposed in the dummy region R21.

As illustrated in FIG. 1 , the region provided with the dummy sub-pixelSP0 is not provided with the first spacer 111, and the first spacer 111is distributed in the edge region R22, so as to avoid the occurrence ofdefects such as side yellowing due to an excessively larger cell gap atan area in the periphery region close to the display region caused by anoverlap between the dummy sub-pixel SP0 and the first spacer 111.

As illustrated in FIG. 1 , in order to prevent from an excessivelylarger cell gap at the dummy region R21, the dummy region R21 is notprovided with the spacer so as to prevent from the defect of side Mura.For example, the spacer 11 and the dummy sub-pixel SP0 have no overlapthere-between. For example, the spacer 11 has no overlap with any of thefirst dummy sub-pixel SP01, the second dummy sub-pixel SP02, and thethird dummy sub-pixel SP03. Further, the first spacer 111 and the dummysub-pixel SP0 have no overlap there-between. For example, the firstspacer 111 has no overlap with any of the first dummy sub-pixel SP01,the second dummy sub-pixel SP02 and the third dummy sub-pixel SP03.

FIG. 2 is a schematic diagram of a mask for forming a sub-pixelillustrated in FIG. 1 as provided by an embodiment of the presentdisclosure. The sub-pixel includes a display sub-pixel SP and a dummysub-pixel SP0. The mask M11 illustrated in FIG. 2 may be used for threedifferent patterning processes to form the first display sub-pixel SP1,the second display sub-pixel SP2, and the third display sub-pixel SP3 inthe display substrate illustrated in FIG. 1 , respectively. Furthermore,forming the first dummy sub-pixel SP01 at the same time when forming thefirst display sub-pixel SP1; forming the second dummy sub-pixel SP02 atthe same time when forming the second display sub-pixel SP2; and formingthe third dummy sub-pixel SP03 at the same time when forming the thirddisplay sub-pixel SP3.

An embodiment of the present disclosure is described with reference tothe case where the first display sub-pixel SP1 is a red sub-pixel, thesecond display sub-pixel SP2 is a green sub-pixel, and the third displaysub-pixel SP3 is a blue sub-pixel, by way of example. The step offorming the color filter layer includes: forming a first displaysub-pixel SP1 and a first dummy sub-pixel SP01 (e.g., a red displaysub-pixel and a red dummy sub-pixel) in a first patterning process byusing a mask; shifting the mask to the right by a distance of onesub-pixel, and forming a second display sub-pixel SP2 and a second dummysub-pixel SP02 (e.g., a green display sub-pixel and a green dummysub-pixel) in a second patterning process by using the mask describedabove; shifting the mask to the right, again, by a distance of onesub-pixel, and forming a third display sub-pixel SP3 and a third dummysub-pixel SP03 (e.g., a blue display sub-pixel and a blue dummysub-pixel) in a third patterning process by using the mask describedabove. As illustrated in FIG. 1 , finally, three columns of dummysub-pixels are formed at each of two opposite sides of the displayregion, and the three columns of dummy sub-pixels include one column offirst dummy sub-pixels SP01, one column of second dummy sub-pixels SP02,and one column of third dummy sub-pixels SP03.

Further, the step of forming the color filter layer includes: forming afirst film, and patterning the first film by using a mask to form afirst display sub-pixel SP1 and a first dummy sub-pixel SP01 (e.g., ared display sub-pixel and a red dummy sub-pixel); forming a second film,shifting the mask to the right by a distance of one sub-pixel, andpatterning the second film by using the mask described above to form asecond display sub-pixel SP2 and a second dummy sub-pixel SP02 (e.g., agreen display sub-pixel and a green dummy sub-pixel); forming a thirdfilm, shifting the mask to the right, again, by a distance of onesub-pixel, and patterning the third film by using the mask describedabove to form a third display sub-pixel SP3 and a third dummy sub-pixelSP03 (e.g., a blue display sub-pixel and a blue dummy sub-pixel);finally, three columns of dummy sub-pixels are formed at each of twoopposite sides of the display region. The first film, the second film,and the third film may be fabricated by using a photoresist. Byfabricating the first display sub-pixel SP1, the second dummy sub-pixelSP02, and the third display sub-pixel SP3 by sharing the same mask, itfacilitates lowering the cost.

FIG. 3 is a schematic diagram of a mask for forming a spacer illustratedin FIG. 1 as provided by an embodiment of the present disclosure. Asillustrated in FIG. 3 , the mask M12 is used for forming the spacer 11illustrated in FIG. 1 .

However, for a display mode including a white sub-pixel, for example,RGBW display mode, because the critical dimension bias (CD bias) of thephotoresist for fabricating the white sub-pixel is different from the CDbias of the photoresist for fabricating R, G or B, only the W sub-pixeluses a different mask, alone. Because RGB display mode involves anisland pattern design instead of a conventional stripe pattern design,if the mask for forming the R sub-pixel is shifted to the right tofabricate the G sub-pixel and the B sub-pixel, a situation would occurthat two dummy sub-pixel are excessive in every other row. Under thecircumstance that the mask for fabricating the spacer remains unchanged,it may result in an overlap between the first spacer 111 and the dummysub-pixel SP0, so that the cell gap at the periphery of the panel isrelatively greater, and the problem of side Mura would occur.

FIG. 4 is a plan view of a display substrate of RGBW display mode. Asillustrated in FIG. 4 , the display panel 02 includes a display regionR1 and a periphery region R2; the periphery region R2 includes a dummyregion R21 close to the display region R1 and an edge region R22 awayfrom the display region R1. The display region R1 further includes afourth display sub-pixel SP4, the dummy region R21 includes a fourthdummy sub-pixel SP04. For example, the fourth display sub-pixel SP4 is awhite sub-pixel, and the fourth dummy sub-pixel SP04 is a whitesub-pixel. The fourth display sub-pixel SP4 and the fourth dummysub-pixel SP04 may be fabricated by using the same mask from the samefilm layer. For example, the first display sub-pixel SP1 is a redsub-pixel, the second display sub-pixel SP2 is a green sub-pixel, thethird display sub-pixel SP3 is a blue sub-pixel, and the fourth displaysub-pixel SP4 is a white sub-pixel, without limited thereto.

As illustrated in FIG. 4 , the dummy region R21 at each of two sides ofthe display region R1 is provided with five columns of dummy sub-pixelSP0; and in the dummy region R21, part of the dummy sub-pixels SP0 havean overlap with the first spacer 111. In this way, the display substrate02 illustrated in FIG. 2 involves the problem that the cell gap at theperiphery region is relatively greater, which easily results in theproblem of side Mura.

FIG. 5 is a schematic diagram of a mask for forming the displaysubstrate of RGBW display mode as illustrated in FIG. 4 . FIG. 5illustrates a first mask M21, a second mask M22, and a third mask M23.The first display sub-pixel SP1 and the first dummy sub-pixel SP01, thesecond display sub-pixel SP2 and the second dummy sub-pixel SP02, thethird display sub-pixel SP3 and the third dummy sub-pixel SP03 areformed by using the first mask 21 in a manner of translationallyshifting the mask M21. The fourth display sub-pixel SP4 and the fourthdummy sub-pixel SP04 are formed by using the second mask M22. The spacer11 is formed by using the third mask M23.

FIG. 6 is a plan view of a display substrate provided by an embodimentof the present disclosure. Compared with the display substrate 02illustrated in FIG. 4 , in the display substrate 03 illustrated in FIG.6 , the first spacer in the dummy region R21 that has an overlap withthe dummy sub-pixel SP0 is removed; in this way, as illustrated in FIG.6 , the spacer 11 has no overlap with the dummy sub-pixel SP0. Further,in the dummy region R21, the dummy sub-pixel SP0 has no overlap with thefirst spacer 111. That is, as illustrated in FIG. 6 , a plurality offirst spacers 11 is located in the dummy region R21 and in the edgeregion R22, and the plurality of first spacers 11 have no overlap withthe dummy sub-pixel SP0. That is, the plurality of first spacers 11 haveno overlap with any of the first dummy sub-pixel SP01, the second dummysub-pixel SP02, the third dummy sub-pixel SP03, and the fourth dummysub-pixel SP04.

As illustrated in FIG. 6 , the dummy region R21 at each of two sides ofthe display region R1 includes five columns of dummy sub-pixels; in thedummy region R21, the first spacer 111 includes a spacer 111 a of firsttype and a spacer 111 b of second type; one of the spacer 111 a of firsttype and the spacer 111 b of second type is located in an even-numberedrow, and the other one of the spacer 111 a of first type and the spacer111 b of second type is located in an odd-numbered row; FIG. 6illustrates the case where the spacer 111 a of first type is located inthe odd-numbered row and the spacer 111 b of second type is located inthe even-numbered row, by way of example. The spacer 111 a of first typeand the spacer 111 b of second type are located in different rows. Forexample, the spacer 111 a of first type and the spacer 111 b of secondtype are located in adjacent rows.

For example, as illustrated in FIG. 6 , the dummy region R21 furtherincludes a blank sub-pixel BSP. The blank sub-pixel BSP in the dummyregion R21 has an overlap with the first spacer 111 located in the dummyregion R21. As illustrated in FIG. 6 , the dummy region R21 includes afirst blank sub-pixel BSP1 located in an odd-numbered row and a secondblank sub-pixel BSP2 located in an even-numbered row.

For example, as illustrated in FIG. 6 , in the dummy region R21 at oneside (right side) of the display region R1, two first blank sub-pixelsBSP1 located in an odd-numbered row are farther from the display regionR1 than the dummy sub-pixel SP0 in the row where the two first blanksub-pixels BSP1 are located; and in two columns of dummy sub-pixelsfarthest from the display region R1, the second dummy sub-pixel SP02 andthe third dummy sub-pixel SP03 are located in an even-numbered row; inone of the two columns of dummy sub-pixels farthest from the displayregion R1, a plurality of second dummy sub-pixels SP02 are arrangedalternately with a plurality of first blank sub-pixels BSP1, in theother one of the two columns of dummy sub-pixels farthest from thedisplay region R1, a plurality of third dummy sub-pixels SP03 arearranged alternately with a plurality of first blank sub-pixels BSP1.

For example, as illustrated in FIG. 6 , in the dummy region R21 at oneside (left side) of the display region R1, two second blank sub-pixelsBSP2 located in an even-numbered row are farther from the display regionR1 than the dummy sub-pixel SP0 in the row where the two second blanksub-pixels BSP2 are located; and in two columns of dummy sub-pixelsfarthest from the display region R1, the first dummy sub-pixel SP01 andthe second dummy sub-pixel SP02 are located in an odd-numbered row; inone of the two columns of dummy sub-pixels farthest from the displayregion R1, a plurality of first dummy sub-pixels SP01 are arrangedalternately with a plurality of second blank sub-pixels BSP2, in theother one of the two columns of dummy sub-pixels farthest from thedisplay region R1, a plurality of second dummy sub-pixels SP02 arearranged alternately with a plurality of second blank sub-pixels BSP2.

FIG. 7 is a schematic diagram of a mask for forming a spacer in thedisplay substrate as illustrated in FIG. 6 . The mask M230 illustratedin FIG. 7 is utilized to replace the third mask M23 illustrated in FIG.5 , that is, the display substrate illustrated in FIG. 6 may be formedby using the first mask M21, the second mask M22, and the mask M230.Forming the display substrate 03 illustrated in FIG. 6 needs to replacethe mask for forming the spacer but does not need to replace the masksfor forming the display sub-pixel and the dummy sub-pixel; that is, ithas no need of replacing the first mask M21 and the second mask M22.

FIG. 8A is a plan view of a display substrate provided by an embodimentof the present disclosure. As illustrated in FIG. 8A, the display panel04 includes a display region R1 and a periphery region R2; the peripheryregion R2 is at least located at one side of the display region R1. Asillustrated in FIG. 8A, the periphery region R2 is located at twoopposite sides of the display region R2. As illustrated in FIG. 8A, theperiphery region R2 includes a dummy region R21 close to the displayregion R1 and an edge region R22 away from the display region R1. Thedisplay region R1 includes a first display sub-pixel SP1, a seconddisplay sub-pixel SP2, a third display sub-pixel SP3, and a fourthdisplay sub-pixel SP4. For example, the first display sub-pixel SP1 is ared sub-pixel, the second display sub-pixel SP2 is a green sub-pixel,the third display sub-pixel SP3 is a blue sub-pixel, and the fourthdisplay sub-pixel SP4 is a white sub-pixel, without limited thereto.

As illustrated in the left side of FIG. 8A, the dummy region R21 at oneside of the display region R1 has two columns of dummy sub-pixels SP0; afirst dummy sub-pixel SP01 and a second dummy sub-pixel SP02 are locatedin the dummy region R21. As illustrated in the left side of FIG. 8A, ablank sub-pixel BSP is located in the dummy region R21; in the dummyregion R21, an odd-numbered row includes the first dummy sub-pixel SP01and the second dummy sub-pixel SP02, and an even-numbered row includestwo adjacent blank sub-pixels BSP. As illustrated in the left side ofFIG. 8A, in one column of dummy sub-pixels, a plurality of blanksub-pixels BSP are arranged alternately with a plurality of first dummysub-pixels SP01; and in the other column of dummy sub-pixels, aplurality of blank sub-pixels BSP are arranged alternately with aplurality of second dummy sub-pixels SP02.

As illustrated in the right side of FIG. 8A, the dummy region R21 at theother side of the display region R1 has two columns of dummy sub-pixelsSP0. As illustrated in the right side of FIG. 8A, a third dummysub-pixel SP03 and a fourth dummy sub-pixel SP04 are located in thedummy region R21. As illustrated in the right side of FIG. 8A, anodd-numbered row includes two adjacent blank sub-pixels BSP, and aneven-numbered row includes the third dummy sub-pixel SP03 and the fourthdummy sub-pixel SP04. As illustrated in the right side of FIG. 8A, inthe dummy region R21, in one column of dummy sub-pixels close to thedisplay region R1, a plurality of blank sub-pixels BSP are alternatelyarranged with a plurality of third dummy sub-pixels SP03; in one columnof dummy sub-pixels away from the display region R1, a plurality ofblank sub-pixels BSP are alternately arranged with a plurality of fourthdummy sub-pixels SP04. As illustrated in FIG. 8A, the blank sub-pixelBSP (the second blank sub-pixel BSP2) in the dummy region R21 at theleft side of the display region R1 and the blank sub-pixel BSP (thefirst blank sub-pixel BSP1) in the dummy region R21 at the right side ofthe display region R1 are located in different rows. As illustrated inFIG. 8A, the second blank sub-pixel BSP2 is located in an even-numberedrow, and the first blank sub-pixel BSP1 is located in an odd-numberedrow. Two columns of dummy sub-pixels SP0 facilitate narrowing the bezeland facilitate supporting the cell gap by the spacer.

As illustrated in FIG. 8A, the display substrate 03 includes a spacer11, the spacer 11 includes a plurality of first spacers 111 located inthe periphery region R2 and a plurality of second spacers 112 located inthe display region R1. As illustrated in FIG. 8A, the spacer 11 has nooverlap with the dummy sub-pixel SP0. The first spacer 111 has nooverlap with the dummy sub-pixel SP0. The second spacer 112 has nooverlap with the dummy sub-pixel SP0. For example, as illustrated inFIG. 8A, the first spacer 111 is only disposed in the edge region R22.The first spacer 111 is not disposed in the dummy region R21. Asillustrated in FIG. 8A, the edge region R22 includes a plurality ofblank region sub-pixels BSP0, each of the blank region sub-pixels BSP0has an overlap with one first spacer 111, and one column of blank regionsub-pixels BSP0 closest to the dummy region R21 has an overlap with thefirst spacer 111 to improve the supporting effect acted on the cell gapby the spacer. FIG. 8B is a plan view of a display substrate provided byanother embodiment of the present disclosure. Compared with the displaysubstrate 04 illustrated in FIG. 8A, in the display substrate 04 aillustrated in FIG. 8B, one column of blank region sub-pixels BSP0closest to the dummy region R21 has no overlap with the first spacer111, that is, the second spacer 112 in the display region R1 and thefirst spacer 111 located in the edge region R22 at one side of thedisplay region R1 are spaced apart by three display sub-pixels. Forexample, the second spacer 112 in the display region R1 and the firstspacer 111 located in the edge region R22 at one side of the displayregion R1 are spaced apart by three columns without providing anyspacer. Under such circumstance, the mask for fabricating the spacer maynot be replaced so as to lower the cost. For example, the spacer in thedisplay substrate 04 a illustrated in FIG. 8B may be fabricated by usingthe mask M12 or the mask M23.

FIG. 9 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 8A, as provided by an embodiment of thepresent disclosure. FIG. 9 illustrates a mask M41, a mask M42, and amask M43.

The display sub-pixel SP and the dummy sub-pixel SP0 may be formed byusing the mask M41 in a manner of translationally shifting the mask M41.The mask M41 illustrated in FIG. 9 may be used for three differentpatterning processes to form the first display sub-pixel SP1, the seconddisplay sub-pixel SP2, and the third display sub-pixel SP3 in thedisplay substrate illustrated in FIG. 8A, respectively. Furthermore, thefirst dummy sub-pixel SP01 is formed in a patterning process of formingthe first display sub-pixel SP1; the second dummy sub-pixel SP02 isformed in a patterning process of forming the second display sub-pixelSP2; and the third dummy sub-pixel SP03 is formed in a patterningprocess of forming the third display sub-pixel SP3. For example, themanufacturing method of the display substrate illustrated in FIG. 8Aincludes: forming a first display sub-pixel SP1 and a first dummysub-pixel SP01 in a first patterning process by using the mask M41;shifting the mask M41 to the right by a distance of one sub-pixel;forming a second display sub-pixel SP2 and a second dummy sub-pixel SP02in a second patterning process by using the mask M41; shifting the maskM41 to the right, again, by a distance of one sub-pixel; and forming athird display sub-pixel SP3 and a third dummy sub-pixel SP03 in a thirdpatterning process by using the mask M41.

For example, the manufacturing method of the display substrateillustrated in FIG. 8A further includes: forming a fourth displaysub-pixel SP4 and a fourth dummy sub-pixel SP04 in the same patterningprocess by using the mask M42.

For example, the manufacturing method of the display substrateillustrated in FIG. 8A further includes: forming a spacer 11 in apatterning process by using the mask M43. The spacer 11 includes a firstspacer 111 located in the periphery region R2 and a second spacer 112located in the display region R1. The first spacer 111 and the secondspacer 112 may be formed by using the same mask.

FIG. 10 is a plan view of a display substrate provided by anotherembodiment of the present disclosure. Compared with the displaysubstrate 04 illustrated in FIG. 8A, in the display substrate 05illustrated in FIG. 10 , a plurality of first spacers 111 is disposed inthe dummy region R21 and in the edge region R22, and the plurality offirst spacers 111 have an overlap with the blank sub-pixel BSP locatedin the dummy region R21. Similarly, the plurality of first spacers 111have no overlap with the dummy sub-pixel SP0. The manufacturing methodof the display substrate 05 illustrated in FIG. 10 is similar to themanufacturing method of the display substrate 04 illustrated in FIG. 8Awith the difference that, when fabricating the spacer 11, it needs toreplace the mask M43 by a mask for fabricating the spacer illustrated inFIG. 10 .

The display substrate 03 illustrated in FIG. 6 , the display substrate04 illustrated in FIG. 8A, the display substrate 04 a illustrated inFIG. 8B, and the display substrate 05 illustrated in FIG. 10 each aresuch a display substrate that the white sub-pixel occupies one quarterof each pixel. That is, one pixel includes four sub-pixels of differentcolors, and the four sub-pixels of different colors include one whitesub-pixel.

FIG. 11 is a plan view of a display substrate provided by anotherembodiment of the present disclosure. The display substrate 06illustrated in FIG. 11 is such a display substrate that the whitesub-pixels occupy one half of each pixel. That is, the number of thewhite sub-pixel included in one pixel occupies one half of the number ofthe sub-pixels. As illustrated in FIG. 11 , one pixel includes sixsub-pixels, the six sub-pixels include three white sub-pixels, and theremaining three sub-pixels are sub-pixels of colors different from thewhite sub-pixels. For example, one pixel includes one red sub-pixel, onegreen sub-pixel, one blue sub-pixel and three white sub-pixels. Thewhite sub-pixel may be located between adjacent two sub-pixels of othercolors.

As illustrated in FIG. 11 , in order to avoid the problem of side Mura,the plurality of first spacers 111 are only located in the edge regionR22, and the dummy region R21 is not provided with the first spacer;that is, the plurality of first spacers 111 have no overlap with thedummy sub-pixel SP0.

As illustrated in FIG. 11 , the dummy region R21 at each of two sides ofthe display region R1 includes three columns of dummy sub-pixels. Asillustrated in the left side of FIG. 11 , among the three columns ofdummy sub-pixels: the white dummy sub-pixel SP04 and the green dummysub-pixel SP02 in one column of dummy sub-pixels are arrangedalternately; the white dummy sub-pixel SP04 and the blank sub-pixel BSPin one column of dummy sub-pixels are arranged alternately; the reddummy sub-pixel SP01 and the blank sub-pixel BSP in one column of dummysub-pixels are arranged alternately. As illustrated in the right side ofFIG. 11 , among the three columns of dummy sub-pixels: the white dummysub-pixel SP04 and the blue dummy sub-pixel SP03 in one column of dummysub-pixels are arranged alternately; the white dummy sub-pixel SP04 andthe blank sub-pixel BSP in the other two columns of dummy sub-pixels arearranged alternately.

FIG. 12 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 11 as provided by an embodiment of thepresent disclosure. FIG. 12 illustrates a mask M61, a mask M62, and amask M63. The usage of the mask M61 may be referred to that of the maskM41 illustrated in FIG. 9 , the usage of the mask M62 may be referred tothat of the mask M42 illustrated in FIG. 9 , and the usage of the maskM63 may be referred to that of the mask M43 illustrated in FIG. 9 ,without repeatedly described here. Compared with the manufacturingmethod of a conventional display substrate, during the manufacturingprocess of the display substrate illustrated in FIG. 11 , the mask forforming the spacer may not be changed.

FIG. 13 is a plan view of a display substrate provided by anotherembodiment of the present disclosure. Compared with the displaysubstrate 06 illustrated in FIG. 11 , in the display substrate 07illustrated in FIG. 13 , a plurality of first spacers 111 is located inthe edge region R22 and in the dummy region R21, the first spacer 111located in the dummy region R21 has an overlap with the blank sub-pixelBSP. As illustrated in FIG. 13 , the plurality of first spacers 111 haveno overlap with the dummy sub-pixel P0.

FIG. 14 is a plan view of a display substrate provided by anotherembodiment of the present disclosure. Compared with the displaysubstrate 06 illustrated in FIG. 11 , in the display substrate 08illustrated in FIG. 14 , the dummy region R21 at each of two sides ofthe display region R1 includes six columns of dummy sub-pixels.

FIG. 15 is a schematic diagram of a mask for forming the displaysubstrate illustrated in FIG. 14 as provided by an embodiment of thepresent disclosure. FIG. 15 illustrates a mask M81, a mask M82, and amask M83. The usage of the mask M81 may be referred to that of the maskM41 illustrated in FIG. 9 , the usage of the mask M82 may be referred tothat of the mask M42 illustrated in FIG. 9 , and the usage of the maskM83 may be referred to that of the mask M43 illustrated in FIG. 9 ,without repeatedly described here.

FIG. 16 is a plan view of a display substrate provided by anotherembodiment of the present disclosure. Compared with the displaysubstrate 08 illustrated in FIG. 14 , in the display substrate 09illustrated in FIG. 16 , a plurality of first spacers 111 is located inthe edge region R22 and in the dummy region R21, the first spacer 111located in the dummy region R21 has an overlap with the blank sub-pixelBSP. As illustrated in FIG. 16 , the plurality of first spacers 111 haveno overlap with the dummy sub-pixel P0.

In the embodiment of the present disclosure, for the display substrate06 illustrated in FIG. 11 , the display substrate 07 illustrated in FIG.13 , the display substrate 08 illustrated in FIG. 14 , and the displaysubstrate 09 illustrated in FIG. 16 , relatively more dummy sub-pixelsSP0 are provided in the dummy region R21, so that a transition from theperiphery region R2 to the display region R1 during coating an alignmentlayer can be achieved to facilitate an ordered orientation of liquidcrystals and to improve the display quality at the periphery.

For example, as illustrated in FIG. 4 , FIG. 6 , FIG. 8A, FIG. 8B, FIG.10 , FIG. 11 , FIG. 13 , FIG. 14 , and FIG. 16 , the dummy region R21includes a first dummy sub-region R01 and a second dummy sub-region R02arranged at two opposite sides of the display region R01, respectively.For example, the portion of the dummy region R21 located at the leftside of the figure is the first dummy sub-region R01, and the portion ofthe dummy region R21 located at the right side of the figure is thesecond dummy sub-region R02. The blank sub-pixel BSP includes a firstblank sub-pixel BSP1 located in one of the first dummy sub-region R01and the second dummy sub-region R02, and a second blank sub-pixel BSP2located in the other one of the first dummy sub-region R01 and thesecond dummy sub-region R02; the first blank sub-pixel BSP1 and thesecond blank sub-pixel BSP2 are located in different rows.

For example, one of the first blank sub-pixel BSP1 and the second blanksub-pixel BSP2 is located in an even-numbered row, and the other one ofthe first blank sub-pixel BSP1 and the second blank sub-pixel BSP2 islocated in an odd-numbered row.

For example, as illustrated in FIG. 8A, FIG. 8B, FIG. 11 , and FIG. 14 ,a plurality of first spacers 111 is only located in the edge region.

For example, as illustrated in FIG. 4 , FIG. 6 , FIG. 10 , FIG. 13 , andFIG. 16 , a plurality of first spacers 111 is located in the dummyregion R21 and in the edge region R22; an orthographic projection of thefirst spacer 111 located in the dummy region R21 on the first basesubstrate BS1 has an overlap with an orthographic projection of theblank sub-pixel BSP on the first base substrate BS1.

For example, as illustrated in FIG. 8A, FIG. 8B, and FIG. 10 , the firstdummy sub-region R01 and the second dummy sub-region R02 each includetwo columns of dummy sub-pixels; in the first dummy sub-region R01, oneof an odd-numbered row and an even-numbered row includes one first dummysub-pixel SP01 and one second dummy sub-pixel SP02, and the other one ofan odd-numbered row and an even-numbered row includes two blanksub-pixels BSP; in the second dummy sub-region R02, one of anodd-numbered row and an even-numbered row includes one third dummysub-pixel SP03 and one fourth dummy sub-pixel SP04, and the other one ofan odd-numbered row and an even-numbered row includes two blanksub-pixels BSP.

For example, as illustrated in FIG. 11 and FIG. 13 , the first dummysub-region R01 and the second dummy sub-region R02 each include threecolumns of dummy sub-pixels; in the first dummy sub-region R01, one ofan odd-numbered row and an even-numbered row includes one first dummysub-pixel SP01, one second dummy sub-pixel SP02, and one fourth dummysub-pixel SP04, and the other one of an odd-numbered row and aneven-numbered row includes one fourth dummy sub-pixel SP04 and two blanksub-pixels BSP; in the second dummy sub-region R02, one of anodd-numbered row and an even-numbered row includes one third dummysub-pixel SP03 and two fourth dummy sub-pixels SP04, and the other oneof an odd-numbered row and an even-numbered row includes one fourthdummy sub-pixel SP04 and two blank sub-pixels BSP.

For example, as illustrated in FIG. 4 and FIG. 6 , the first dummysub-region R01 and the second dummy sub-region R02 each include fivecolumns of dummy sub-pixels; in the first dummy sub-region R01, one ofan odd-numbered row and an even-numbered row includes two first dummysub-pixels SP01, one second dummy sub-pixel SP02, one third dummysub-pixel SP03, and one fourth dummy sub-pixel SP04, and the other oneof an odd-numbered row and an even-numbered row includes one first dummysub-pixel SP01, one second dummy sub-pixel SP02, one third dummysub-pixel SP03, and two blank sub-pixels BSP; in the second dummysub-region R02, one of an odd-numbered row and an even-numbered rowincludes one first dummy sub-pixel SP01, one second dummy sub-pixelSP02, one third dummy sub-pixel SP03, and two fourth dummy sub-pixelsSP04, and the other one of an odd-numbered row and an even-numbered rowincludes one first dummy sub-pixel SP01, one second dummy sub-pixelSP02, one third dummy sub-pixel SP03, and two blank sub-pixels BSP.

For example, as illustrated in FIG. 14 and FIG. 16 , the first dummysub-region R01 and the second dummy sub-region R02 each include sixcolumns of dummy sub-pixels; in the first dummy sub-region R01, one ofan odd-numbered row and an even-numbered row includes one first dummysub-pixel SP01, one second dummy sub-pixel SP02, one third dummysub-pixel SP03, and three fourth dummy sub-pixels SP04, and the otherone of an odd-numbered row and an even-numbered row includes one firstdummy sub-pixel SP01, one second dummy sub-pixel SP02, two fourth dummysub-pixels SP04, and two blank sub-pixels BSP; in the second dummysub-region R02, one of an odd-numbered row and an even-numbered rowincludes one first dummy sub-pixel SP01, one second dummy sub-pixelSP02, one third dummy sub-pixel SP03 and three fourth dummy sub-pixelsSP04, and the other one of an odd-numbered row and an even-numbered rowincludes one third dummy sub-pixel SP03, three fourth dummy sub-pixelsSP04, and two blank sub-pixels BSP.

At least one embodiment of the present disclosure further provides adisplay panel including the display substrate described in any of theabove.

FIG. 17 is a partial cross-sectional view of a display panel provided byan embodiment of the present disclosure. As illustrated in FIG. 17 , thedisplay panel includes an array substrate S2 and an opposed substrate S1that are arranged opposite to each other. As illustrated in FIG. 17 ,the opposed substrate S1 includes a first base substrate BS1, and ablack matrix BM and a light-shielding layer LSL that are located on thefirst base substrate BS1; the black matrix BM and the light-shieldinglayer LSL may be formed from the same film layer by using the samepatterning process, and may be formed in the same layer. The blackmatrix BM is located in the display region R1, and the light-shieldinglayer LSL is located in the periphery region R2. After the black matrixBM and the light-shielding layer LSL are formed, a display sub-pixel SPis formed in the display region R1, and a dummy sub-pixel SP0 is formedin the dummy region R21. Then an optical clear adhesive layer OCA iscoated. A spacer 11 is formed on the optical clear adhesive layer OCA.As illustrated in FIG. 17 , after the spacer 11 is formed, a firstalignment layer AM1 is formed. As illustrated in FIG. 17 , a firstspacer 111 is formed in the edge region R22, and a second spacer 112 isformed in the display region RE As illustrated in FIG. 17 , the firstspacer 111 and the second spacer 112 have the same size in a directionperpendicular to the first base substrate BS1. For example, a gap G isprovided between the first spacer 111 and the array substrate S2. Asillustrated in FIG. 17 , the first spacer 111 is not in contact with thearray substrate S2, so that an influence on display by the second spacerin the periphery region R2 can be avoided and hence the problem of sideMura can be avoided. For example, as illustrated in FIG. 17 , the secondspacer 112 is in contact with the array substrate S2. As illustrated inFIG. 17 , the first spacer 111 has no overlap with the dummy sub-pixelSP0 so as to avoid the problem of side Mura.

As illustrated in FIG. 17 , the array substrate S2 includes a secondbase substrate BS2 and a buffer layer BL located on the second basesubstrate BS2; a common electrode CE is disposed on the buffer layer BL,an insulating layer IS is disposed on the common electrode CE, aplurality of pixel electrodes PXE insulated from each other are disposedon the insulating layer IS, and a second alignment layer AM2 is disposedon the plurality of pixel electrodes PXE insulated from each other.

As illustrated in FIG. 17 , an orthographic projection of the displaysub-pixel SP on the first base substrate BS1 has an overlap with anorthographic projection of the pixel electrode PXE on the first basesubstrate BS1. An orthographic projection of the dummy sub-pixel SP0 onthe first base substrate BS1 has no overlap with the orthographicprojection of the pixel electrode PXE on the first base substrate BS1.An orthographic projection of the blank sub-pixel BSP on the first basesubstrate BS1 has no overlap with the orthographic projection of thepixel electrode PXE on the first base substrate BS1.

As illustrated in FIG. 17 , the first spacer 111 has an overlap with thelight-shielding layer LSL. The second spacer 112 has an overlap with theblack matrix BM. The second spacer 112 has no overlap with thelight-shielding layer LSL.

FIG. 18 is a partial cross-sectional view of a display panel provided byan embodiment of the present disclosure. The display substrateillustrated in FIG. 18 is different from the display substrateillustrated in FIG. 17 in that, the display substrate illustrated inFIG. 18 illustrates a sealant SLT through which the array substrate S2and the opposed substrate S1 are assembled and sealed into a cell, and aliquid crystal layer LCL is disposed in the cell.

As illustrated in FIG. 17 and FIG. 18 , the display substrate furtherincludes a dummy pixel electrode DPXE. The dummy pixel electrode DPXEcorresponds to the dummy sub-pixel SP0. The dummy pixel electrode DPXEis a floating electrode, that is, no signal is applied to the dummypixel electrode DPXE. The dummy pixel electrode DPXE and the pixelelectrode PXE are formed from the same film layer by using the samepatterning process, and the arrangement of the dummy pixel electrodeDPXE is for the purpose of obtaining uniform pixel electrode PXE. Asillustrated in FIG. 17 and FIG. 18 , an orthographic projection of thedummy pixel electrode DPXE on the first base substrate BS1 is locatedwithin an orthographic projection of the light-shielding layer LSL onthe first base substrate BS1. The orthographic projection of the dummypixel electrode DPXE on the first base substrate BS1 has no overlap withan orthographic projection of the black matrix BM on the first basesubstrate BS1.

For example, as illustrated in FIG. 18 , the dummy sub-pixel SP0 isshielded by the light-shielding layer LSL. The display sub-pixel SP isnot shielded by the light-shielding layer LSL. An orthographicprojection of the display sub-pixel SP on the first base substrate BS1has an overlap with an orthographic projection of the black matrix BM onthe first base substrate BS1.

FIG. 19 is a partial cross-sectional view of a display panel provided byanother embodiment of the present disclosure. FIG. 19 illustrates ablank sub-pixel BSP in the dummy region R21, and a first spacer 111overlapped with the blank sub-pixel BSP. The first spacer 111 located inthe periphery region R2 has the same height as the second spacer 112located in the display region RE That is, the first spacer 111 locatedin the periphery region R2 and the second spacer 112 located in thedisplay region R1 have the same size in a direction perpendicular to thefirst base substrate BS1.

For example, as illustrated in FIG. 19 , the blank sub-pixel BSP locatedin the dummy region R21 is shielded by the light-shielding layer LSL. Asillustrated in FIG. 19 , the blank region sub-pixel BSP0 located in theedge region R22 is shielded by the light-shielding layer LSL.

For example, as illustrated in FIGS. 17-19 , the first spacer 111 andthe second spacer 112 have the same size in a direction perpendicular tothe first base substrate BS1. A distance from a surface of the firstspacer 111 away from the first base substrate BS1 to the first basesubstrate BS1 is smaller than a distance from a surface of the secondspacer 112 away from the first base substrate BS1 to the first basesubstrate BS1.

For example, as illustrated in FIGS. 17-19 , an optical clear adhesivelayer OCA covers the display sub-pixel SP and the dummy sub-pixel SP0.

For example, as illustrated in FIGS. 17-19 , an orthographic projectionof the first spacer 111 on the first base substrate BS1 is locatedwithin an orthographic projection of the light-shielding layer LSL onthe first base substrate BS1; and an orthographic projection of thesecond spacer 112 on the first base substrate BS1 is located within anorthographic projection of the black matrix BM on the first basesubstrate BS1.

For example, as illustrated in FIGS. 17-19 , the first alignment layerAM1 is located on the first base substrate BS1, and the first alignmentlayer AM1 covers the display sub-pixel SP and the dummy sub-pixel SP0.

FIG. 20 is a schematic diagram of a black matrix and a light-shieldinglayer in a display substrate provided by an embodiment of the presentdisclosure. As illustrated in FIG. 20 , the black matrix BM and thelight-shielding layer LSL are formed in the same layer, and thelight-shielding layer LSL surrounds the black matrix BM. As illustratedin FIG. 20 , the black matrix BM includes a plurality of openings PN.For example, each of the openings may correspond to one displaysub-pixel SP.

FIG. 21 is a schematic diagram of a display substrate provided by anembodiment of the present disclosure. Compared with the displaysubstrate illustrated in FIG. 18 , the display substrate illustrated inFIG. 21 illustrates a thin film transistor T, and the pixel electrodePXE is connected with the thin film transistor T to control thesub-pixel to be turned on and turned off. Each of the pixel electrodesPXE may be individually controlled. For example, the sub-pixel includesa display sub-pixel and a pixel electrode PXE. A first insulating layerIS1 is provided between the pixel electrode PXE and the thin filmtransistor T, and a second insulating layer IS2 is provided between thethin film transistor T and the common electrode CE. For example, thepixel electrode PXE is connected with a drain electrode of the thin filmtransistor T.

As illustrated in FIG. 21 , a portion of the first insulating layer IS1located right below the dummy pixel electrode DPXE is not provided witha via hole so that the dummy pixel electrode DPXE is floated. In FIG. 21, no thin film transistor T is disposed below the dummy pixel electrodeDPXE; in other embodiments, a thin film transistor T may be disposedbelow the dummy pixel electrode DPXE, as long as the dummy pixelelectrode DPXE is not connected with the thin film transistor T. Forexample, as illustrated in FIGS. 17-19 and FIG. 21 , the plurality ofpixel electrodes PXE are insulated from each other, and the pixelelectrode PXE and the dummy pixel electrode DPXE are insulated from eachother. For example, the pixel electrode PXE and the dummy pixelelectrode DPXE are formed from the same film layer by using the samepatterning process. For example, the pixel electrode PXE and the dummypixel electrode DPXE are formed by using a transparent conductivematerial, and the transparent conductive material includes tin indiumoxide (ITO), without limited thereto.

In the embodiments of the present disclosure, the common electrode CEand the pixel electrode PXE are disposed on the second base substrateBS2, so as to form a liquid crystal display device of an Advanced superDimension Switch (ADS) mode or a High Advanced Super Dimension Switch(HADS) mode. One of the common electrode CE and the pixel electrode PXEthat is closer to the liquid crystal layer LCL may adopt a slitelectrode to control liquid crystal molecules in the liquid crystallayer LCL to rotate. It should be explained that, the mode of the liquidcrystal display device is not limited to the ADS mode or HADS mode, andthe common electrode CE may also be disposed on the second basesubstrate BS2.

In the embodiments of the present disclosure, for example, asillustrated in FIG. 4 , FIG. 6 , FIG. 8A, FIG. 8B, FIG. 10 , FIG. 11 ,FIG. 13 , FIG. 14 , FIG. 16 , FIG. 17 , FIG. 18 , FIG. 19 and FIG. 21 ,the edge region R22 is provided with a blank region sub-pixel BSP0, andthe blank region sub-pixel BSP0 in the edge region R22 has no overlapwith the plurality of pixel electrodes PXE in a direction perpendicularto the first base substrate BS1. That is, an orthographic projection ofthe blank region sub-pixel BSP0 in the edge region R22 on the first basesubstrate BS1 has no overlap with orthographic projections of theplurality of pixel electrodes PXE on the first base substrate BS1. Forexample, the blank region sub-pixel BSP0 in the edge region R22 has nooverlap with the plurality of dummy pixel electrodes DPXE in a directionperpendicular to the first base substrate BS1. That is, the orthographicprojection of the blank region sub-pixel BSP0 in the edge region R22 onthe first base substrate BS1 has no overlap with orthographicprojections of the plurality of dummy pixel electrodes DPXE on the firstbase substrate BS1. The blank region sub-pixel BSP0 in the edge regionR22 may have a structure as same as that of the blank sub-pixel BSP inthe dummy region R21.

In the embodiment of the present disclosure, a position of the displaysub-pixel SP0 may allow light to transmit; however, because the dummypixel electrode DPXE in the periphery region R2 is floated and theperiphery region R2 is provided with the light-shielding layer LSL,positions at the dummy sub-pixel SP0 in the periphery region R2 and atthe blank sub-pixel BSP in the periphery region R2 do not allow light totransmit.

For example, in the embodiment of the present disclosure, the firstdisplay sub-pixel transmits light of a first color, the second displaysub-pixel transmits light of a second color, the third display sub-pixeltransmits light of a third color, and the fourth display sub-pixeltransmits light of a fourth color. The first display sub-pixel, thesecond display sub-pixel, the third display sub-pixel, and the fourthdisplay sub-pixel emit light having colors different from each other.For example, the light of first color is red light, the light of secondcolor is green light, the light of third color is blue light, and thelight of fourth color is white light, without limited thereto.

For example, as illustrated in FIGS. 17-19 and FIG. 21 , a color filterlayer 101 includes a display sub-pixel SP located in the display regionR1 and a dummy sub-pixel SP0 located in the periphery region R2. Thecolor filter layer 101 is hollowed-out at a position of the blanksub-pixel BSP. The color filter layer 101 is hollowed-out at a positionof the blank region sub-pixel BSP0.

For example, in the embodiment of the present disclosure, the firstdisplay sub-pixel, the second display sub-pixel, and the third displaysub-pixel each include a resin material and a corresponding dyestuff orfluorescent substance, so as to emit light of different colors. Thefourth display sub-pixel may include a resin material but includes nodyestuff or fluorescent substance, so as to emit white light. The blanksub-pixel includes no resin material for forming the color filter layer101. The blank sub-pixel in the dummy region has an overlap with thedummy pixel electrode DPXE, and the blank sub-pixel in the edge regionhas no overlap with the dummy pixel electrode DPXE.

For example, in the embodiment of the present disclosure, the firstdummy sub-pixel SP01, the second dummy sub-pixel SP02, the third dummysub-pixel SP03, and the fourth dummy sub-pixel SP04 are formed ofmaterials as same as those of the first display sub-pixel SP1, thesecond display sub-pixel SP2, the third display sub-pixel SP3, and thefourth display sub-pixel SP4, respectively. That is, the first dummysub-pixel SP01 and the first display sub-pixel SP1 are formed by thesame material; the second dummy sub-pixel SP02 and the second displaysub-pixel SP2 are formed by the same material; the third dummy sub-pixelSP03 and the third display sub-pixel SP3 are formed by the samematerial; and the fourth dummy sub-pixel SP04 and the fourth displaysub-pixel SP4 are formed by the same material.

In the embodiment of the present disclosure, by sharing the mask, thecost of development is reduced; and by optimizing the design of thedummy sub-pixel or the first spacer 111 (dummy spacer), the problem ofside Mura caused by an overlap between the dummy sub-pixel and the firstspacer 111 can be avoided.

For example, in the embodiment of the present disclosure, in the casewhere the first display sub-pixel SP1 is red sub-pixel (R), the seconddisplay sub-pixel SP2 is green sub-pixel (G), the third displaysub-pixel SP3 is blue sub-pixel (B), and the fourth display sub-pixelSP4 is white sub-pixel (W), the pixels on the display substrateillustrated in FIG. 4 , FIG. 6 , FIG. 8A, FIG. 8B and FIG. 10 arearranged in RGBW mode. For example, the first display sub-pixel, thesecond display sub-pixel, the third display sub-pixel, and the fourthdisplay sub-pixel are arranged sequentially along a first direction andconstitute one pixel; two pixels adjacent in a second direction arestaggered in the first direction by a distance of two displaysub-pixels; the first direction is intersected with the seconddirection. For example, the first direction is a row direction, and thesecond direction is a column direction. For example, the first directionis perpendicular to the second direction, without limited thereto. Forexample, FIG. 8A schematically illustrates a pixel PXL.

For example, in the embodiment of the present disclosure, in the casewhere the first display sub-pixel SP1 is red sub-pixel (R), the seconddisplay sub-pixel SP2 is green sub-pixel (G), the third displaysub-pixel SP3 is blue sub-pixel (B), and the fourth display sub-pixelSP4 is white sub-pixel (W), the pixels on the display substrateillustrated in FIG. 11 , FIG. 13 , FIG. 14 , FIG. 16 , FIG. 17 , FIG. 18, FIG. 19 and FIG. 21 are arranged in RWGWBW mode. For example, onefirst display sub-pixel, one fourth display sub-pixel, one seconddisplay sub-pixel, one fourth display sub-pixel, one third displaysub-pixel and one fourth display sub-pixel are arranged sequentiallyalong a first direction and constitute one pixel; two pixels adjacent ina second direction are staggered in the first direction by a distance ofthree display sub-pixels; the first direction is intersected with thesecond direction. For example, the first direction is a row direction,and the second direction is a column direction. For example, the firstdirection is perpendicular to the second direction, without limitedthereto. For example, FIG. 11 schematically illustrates a pixel PXL.

Another embodiment of the present disclosure further provides a displaydevice, including the display substrate described in any of the above.The display device may include a liquid crystal display device and anyproduct or component that includes a liquid crystal display device andhas display function such as a television, a digital camera, a mobilephone, a watch, a tablet computer, a notebook computer, and a navigator.

It should be explained that, for purpose of clarity, in the drawings fordescribing the embodiments of the present disclosure, the thickness of alayer or a region is enlarged. It's understandable that, when an elementsuch as a layer, a film, a region and a substrate is referred to asbeing located “on” or “below” another element, the element may be“directly” located “on” or “below” another element, or an intermediateelement may be provided.

For example, in the embodiments of the present disclosure, two elementshave no overlap refers to that orthographic projections of the twoelements on the first base substrate have no overlap.

In the embodiments of the present disclosure, the shape of each of theelements is merely described by way of example, and is not limited tothat illustrated in the figures but may be determined according torequirements.

In the embodiments of the present disclosure, the patterning orpatterning process may only include a photolithographic process, or mayinclude the photolithographic process and an etching process, or mayinclude other process(es) for forming a predetermined pattern such as aprinting process and an ink-jetting process. The photolithographicprocess refers to a process which includes steps of film forming,exposing and developing and which forms a pattern by utilizing aphotoresist, a mask, an exposure machine and the like. A correspondingpatterning process may be selected according to the structure(s) to beformed in the embodiments of the present disclosure.

In case of no conflict, the features in the same embodiment or indifferent embodiments can be combined with each other.

What have been described above are only specific implementations of thepresent disclosure, but the protection scope of the present disclosureis not limited thereto. All the changes or substitutions easilyconceivable for any skilled who is familiar with the present technicalfield should be covered by the protection scope of the presentdisclosure. Therefore, the protection scope of the present disclosureshould be based on the protection scope of the claims.

1. A display substrate, comprising: a color filter layer, comprising adisplay sub-pixel and a dummy sub-pixel, the display sub-pixel beinglocated in a display region of a first base substrate, the displaysub-pixel comprising a first display sub-pixel, a second displaysub-pixel, a third display sub-pixel, and a fourth display sub-pixel,colors of emitted light of the first display sub-pixel, the seconddisplay sub-pixel, the third display sub-pixel, and the fourth displaysub-pixel being different from each other; the dummy sub-pixel beinglocated in a periphery region of the first base substrate, the peripheryregion being at least located at one side of the display region, theperiphery region comprising a dummy region close to the display regionand an edge region away from the display region, the dummy sub-pixelbeing located in the dummy region, the dummy sub-pixel comprising afirst dummy sub-pixel, a second dummy sub-pixel, a third dummysub-pixel, and a fourth dummy sub-pixel, materials of the first dummysub-pixel, the second dummy sub-pixel, the third dummy sub-pixel, andthe fourth dummy sub-pixel being the same as materials of the firstdisplay sub-pixel, the second display sub-pixel, the third displaysub-pixel and the fourth display sub-pixel, respectively; and a spacer,comprising a plurality of first spacers and a plurality of secondspacers, the plurality of first spacers being located in the peripheryregion, the plurality of second spacers being located in the displayregion, wherein an orthographic projection of each of the plurality offirst spacers on the first base substrate has no overlap with anorthographic projection of the dummy sub-pixel on the first basesubstrate.
 2. The display substrate according to claim 1, wherein thedummy region comprises a blank sub-pixel, the color filter layer ishollowed-out at a position of the blank sub-pixel, the dummy regioncomprises a first dummy sub-region and a second dummy sub-region locatedat two opposite sides of the display region, respectively, the blanksub-pixel comprises a first blank sub-pixel located in the first dummysub-region and a second blank sub-pixel located in the second dummysub-region, and the first blank sub-pixel and the second blank sub-pixelare located in different rows.
 3. The display substrate according toclaim 2, wherein one of the first blank sub-pixel and the second blanksub-pixel is located in an even-numbered row, and the other one of thefirst blank sub-pixel and the second blank sub-pixel is located in anodd-numbered row.
 4. The display substrate according to claim 2, whereinthe plurality of first spacers are only located in the edge region; or,the plurality of first spacers are located in the dummy region and inthe edge region, an orthographic projection of the first spacer locatedin the dummy region on the first base substrate has an overlap with anorthographic projection of the blank sub-pixel on the first basesubstrate.
 5. The display substrate according to claim 2, furthercomprising a black matrix and a light-shielding layer, wherein the blackmatrix and the light-shielding layer are located on the first basesubstrate, the black matrix is located in the display region, thelight-shielding layer is located in the periphery region, anorthographic projection of the first spacer on the first base substrateis located within an orthographic projection of the light-shieldinglayer on the first base substrate, and an orthographic projection of theeach of the plurality of second spacers on the first base substrate islocated within an orthographic projection of the black matrix on thefirst base substrate.
 6. The display substrate according to claim 2,wherein each of the first dummy sub-region and the second dummysub-region comprises two columns of dummy sub-pixels; in the first dummysub-region, one of an odd-numbered row and an even-numbered rowcomprises one first dummy sub-pixel and one second dummy sub-pixel, andthe other one of the odd-numbered row and the even-numbered rowcomprises two blank sub-pixels; in the second dummy sub-region, one ofan odd-numbered row and an even-numbered row comprises one third dummysub-pixel and one fourth dummy sub-pixel, and the other one of theodd-numbered row and the even-numbered row comprises two blanksub-pixels.
 7. The display substrate according to claim 6, wherein thefirst display sub-pixel, the second display sub-pixel, the third displaysub-pixel, and the fourth display sub-pixel are arranged sequentially ina first direction and constitute one pixel, two pixels adjacent in asecond direction are staggered in the first direction by a distance oftwo display sub-pixels, the first direction is intersected with thesecond direction.
 8. The display substrate according to claim 6, whereinthe edge region comprises a blank region sub-pixel, the color filterlayer is hollowed-out at a position of the blank region sub-pixel; thesecond spacer located in the display region and the first spacer locatedin the edge region at one side of the display region are spaced apart bythree display sub-pixels.
 9. The display substrate according to claim 2,wherein each of the first dummy sub-region and the second dummysub-region comprises three columns of dummy sub-pixels; in the firstdummy sub-region, one of an odd-numbered row and an even-numbered rowcomprises one first dummy sub-pixel, one second dummy sub-pixel, and onethird dummy sub-pixel, and the other one of the odd-numbered row and theeven-numbered row comprises one fourth dummy sub-pixel and two blanksub-pixels; in the second dummy sub-region, one of an odd-numbered rowand an even-numbered row comprises one third dummy sub-pixel and twofourth dummy sub-pixels, and the other one of the odd-numbered row andthe even-numbered row comprises one fourth dummy sub-pixel and two blanksub-pixels.
 10. The display substrate according to claim 2, wherein eachof the first dummy sub-region and the second dummy sub-region comprisesfive columns of dummy sub-pixels; in the first dummy sub-region, one ofan odd-numbered row and an even-numbered row comprises two first dummysub-pixels, one second dummy sub-pixel, one third dummy sub-pixel, andone fourth dummy sub-pixel, and the other one of the odd-numbered rowand the even-numbered row comprises one first dummy sub-pixel, onesecond dummy sub-pixel, one third dummy sub-pixel, and two blanksub-pixels; in the second dummy sub-region, one of an odd-numbered rowand an even-numbered row comprises one first dummy sub-pixel, one seconddummy sub-pixel, one third dummy sub-pixel, and two fourth dummysub-pixels, and the other one of the odd-numbered row and theeven-numbered row comprises one first dummy sub-pixel, one second dummysub-pixel, one third dummy sub-pixel, and two blank sub-pixels.
 11. Thedisplay substrate according to claim 2, wherein each of the first dummysub-region and the second dummy sub-region comprises six columns ofdummy sub-pixels; in the first dummy sub-region, one of an odd-numberedrow and an even-numbered row comprises one first dummy sub-pixel, onesecond dummy sub-pixel, one third dummy sub-pixel, and three fourthdummy sub-pixels, and the other one of the odd-numbered row and theeven-numbered row comprises one first dummy sub-pixel, one second dummysub-pixel, two fourth dummy sub-pixels, and two blank sub-pixels; in thesecond dummy sub-region, one of an odd-numbered row and an even-numberedrow comprises one first dummy sub-pixel, one second dummy sub-pixel, onethird dummy sub-pixel, and three fourth dummy sub-pixels, and the otherone of the odd-numbered row and the even-numbered row comprises onethird dummy sub-pixel, three fourth dummy sub-pixels, and two blanksub-pixels.
 12. The display substrate according to claim 1, wherein thefirst spacer and each of the plurality of second spacers have a samesize in a direction perpendicular to the first base substrate, and adistance from a surface of the first spacer away from the first basesubstrate to the first base substrate is smaller than a distance from asurface of the second spacer away from the first base substrate to thefirst base substrate.
 13. The display substrate according to claim 1,further comprising an optical clear adhesive layer located on the firstbase substrate, wherein the optical clear adhesive layer covers thedisplay sub-pixel and the dummy sub-pixel.
 14. The display substrateaccording to claim 1, further comprising a first alignment layer locatedon the first base substrate, wherein the first alignment layer coversthe display sub-pixel and the dummy sub-pixel.
 15. (canceled)
 16. Adisplay panel, comprising the display substrate according to claim 1.17. The display panel according to claim 16, further comprising an arraysubstrate, wherein the array substrate comprises a plurality of pixelelectrodes, and the orthographic projection of the dummy sub-pixel onthe first base substrate has no overlap with orthographic projections ofthe plurality of pixel electrodes on the first base substrate.
 18. Thedisplay panel according to claim 17, wherein an orthographic projectionof the display sub-pixel on the first base substrate has an overlap withan orthographic projection of one pixel electrode of the plurality ofpixel electrodes on the first base substrate.
 19. The display panelaccording to claim 17, wherein a gap is provided between the firstspacer and the array substrate.
 20. The display panel according to claim17, wherein the plurality of second spacers are in contact with thearray substrate.
 21. A display device, comprising the display panelaccording to claim 16.